94731511421 has 4 divisors (see below), whose sum is σ = 94732386144. Its totient is φ = 94730636700.

The previous prime is 94731511397. The next prime is 94731511439. The reversal of 94731511421 is 12411513749.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12411513749 = 35159 ⋅353011.

It is a cyclic number.

It is not a de Polignac number, because 94731511421 - 2²⁶ = 94664402557 is a prime.

It is a super-2 number, since 2×94731511421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (94731511481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247415 + ... + 500676.

It is an arithmetic number, because the mean of its divisors is an integer number (23683096536).

Almost surely, 2^94731511421 is an apocalyptic number.

It is an amenable number.

94731511421 is a deficient number, since it is larger than the sum of its proper divisors (874723).

94731511421 is a wasteful number, since it uses less digits than its factorization.

94731511421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874722.

The product of its digits is 30240, while the sum is 38.

The spelling of 94731511421 in words is "ninety-four billion, seven hundred thirty-one million, five hundred eleven thousand, four hundred twenty-one".